The PFC window resize service is one of my favorite things in the entire class library as it can easily be implemented and adds a great bit of functionality to an application. One drawback, however, is there is no built in capability to limit the resizing of the objects on a window; either they resize and\/or move or they don’t. This simple extension adds the capability to set maximum width and height values to the controls being resized so you don’t end up with an ugly display of a large blank space after the end of the columns inside a datawindow control.<\/p>\n
To implement this extension you need to change the code in the n_cst_resizeattrib and n_cst_resize objects. Whether you do this at the PFC layer or some corporate layer is up to you.<\/p>\n
In the n_cst_resizeattrib object add the following instance variables:<\/p>\n
real\t\tr_maxwidth = 0\r\nreal\t\tr_maxheight = 0<\/pre>\nIn the n_cst_resize object do the following:<\/p>\n
Alter the of_register function to return the array position ‘li_slot_available’.<\/p>\n
Add the following functions:<\/p>\n
public function integer of_setmaxcontrolwidth (integer ai_arraypos, real ar_width);\r\n\/\/ 11.5.1 set maximum control width\r\n\/\/ parms ai_arraypos - array position in the inv_registered control array\r\n\/\/ \t\t\tar_width - maximum witdth control can be resized to\r\n\/\/set r_maxwidth in n_cst_resizeattrib for specified array position\r\nIF Upperbound(inv_registered) >= ai_arraypos THEN\r\n\tinv_registered[ai_arraypos].r_maxwidth = ar_width\r\n\tRETURN Success\r\nELSE\r\n\tRETURN Failure\r\nEND IF\r\nend function\r\n\r\npublic function integer of_setmaxcontrolheight (integer ai_arraypos, real ar_height);\r\n\/\/ 11.5.1 set maximum control width\r\n\/\/ parms ai_arraypos - array position in the inv_registered control array\r\n\/\/ \t\t\tar_width - maximum height control can be resized to\r\n\/\/set r_maxheight in n_cst_resizeattrib for specified array position\r\nIF Upperbound(inv_registered) >= ai_arraypos THEN\r\n\tinv_registered[ai_arraypos].r_maxheight = ar_height\r\n\tRETURN Success\r\nELSE\r\n\tRETURN Failure\r\nEND IF\r\nend function<\/pre>\nThen in the of_resize method modify as follows:<\/p>\n
BEFORE:\r\n\/\/Save the 'exact' Width and Height attributes.\r\ninv_registered[li_cnt].r_width = inv_registered[li_cnt].r_width + lr_resize_deltawidth\t\r\ninv_registered[li_cnt].r_height = inv_registered[li_cnt].r_height + lr_resize_deltaheight\r\n\r\nAFTER:\r\n\/\/ look at maximum values\r\nIF (inv_registered[li_cnt].r_maxwidth > 0) AND (inv_registered[li_cnt].r_width + lr_resize_deltawidth > inv_registered[li_cnt].r_maxwidth) THEN\r\n\t\/\/ exceeds max width so set to max\r\n\tinv_registered[li_cnt].r_width = inv_registered[li_cnt].r_maxwidth\r\nELSEIF (inv_registered[li_cnt].r_width = inv_registered[li_cnt].r_maxwidth) AND (inv_registered[li_cnt].r_maxwidth > 0) THEN\r\n\tIF inv_registered[li_cnt].b_scalewidth AND (inv_registered[li_cnt].r_width > ai_newwidth) THEN\r\n\t\t\/\/ resize down from max width to fit on window (115 is width of vertical scroll bar)\r\n\t\tinv_registered[li_cnt].r_width = inv_registered[li_cnt].r_maxwidth + (ai_newwidth - inv_registered[li_cnt].r_width ) - 115\r\n\tEND IF\r\nELSE\r\n\t\/\/Save the 'exact' Width and Height attributes.\r\n\tinv_registered[li_cnt].r_width = inv_registered[li_cnt].r_width + lr_resize_deltawidth\t\r\nEND IF\r\n\t\t\t\r\nIF (inv_registered[li_cnt].r_maxheight > 0) AND (inv_registered[li_cnt].r_height + lr_resize_deltaheight > inv_registered[li_cnt].r_maxheight) THEN\r\n\t\/\/ exceeds max so set to max\r\n\tinv_registered[li_cnt].r_height = inv_registered[li_cnt].r_maxheight\r\nELSEIF (inv_registered[li_cnt].r_height = inv_registered[li_cnt].r_maxheight) AND (inv_registered[li_cnt].r_maxheight > 0) THEN\r\n\t\t\/\/ resize down from max\r\n\tIF inv_registered[li_cnt].b_scaleheight AND (inv_registered[li_cnt].r_height > ai_newheight) THEN\r\n\t\t\/\/ resize down from max height to fit on window (115 is width of horizontal scroll bar)\r\n\t\tinv_registered[li_cnt].r_height = inv_registered[li_cnt].r_maxheight + (ai_newheight - inv_registered[li_cnt].r_height ) - 115\r\n\tEND IF\r\nELSE\r\n\tinv_registered[li_cnt].r_height = inv_registered[li_cnt].r_height + lr_resize_deltaheight\t\r\nEND IF<\/pre>\nNow in the event you register the controls on the window do the following:<\/p>\n
li_arraypos = this.inv_resize.of_Register(dw_1, this.inv_resize.SCALERIGHTBOTTOM)\r\nIF li_arraypos > 0 THEN\r\n\t\/\/ set max width and height for dw_1\r\n\tthis.inv_resize.of_setmaxcontrolwidth(li_arraypos, 6400)\r\n\tthis.inv_resize.of_setmaxcontrolheight(li_arraypos, 3000)\r\nEND IF<\/pre>\nNOTE: as of 10\/1\/2010 I am unable to get the height maximum piece to properly resize down from a maximum setting. This seems to be a bug but I will work on it some more as time permits. At this time I recommend not setting a maximum height for datawindows.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"
The PFC window resize service is one of my favorite things in the entire class library as it can easily be implemented and adds a great bit of functionality to an application. One drawback, however, is there is no built in capability to limit the resizing of the objects on a window; either they resize…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3,10],"tags":[33,12,16],"_links":{"self":[{"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/posts\/408"}],"collection":[{"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/comments?post=408"}],"version-history":[{"count":9,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/posts\/408\/revisions"}],"predecessor-version":[{"id":957,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/posts\/408\/revisions\/957"}],"wp:attachment":[{"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/media?parent=408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/categories?post=408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/tags?post=408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}